Add new helper functions WebKit2GTK+'s favicons API.

At the moment, just add one function to obtain a GdkPixbuf* with
specific dimensions from a cairo_surface_t*.

https://bugzilla.gnome.org/show_bug.cgi?id=679370

1 files changed, 49 insertions, 0 deletions

diff --git a/lib/ephy-favicon-helpers.c b/lib/ephy-favicon-helpers.c
new file mode 100644
index 000000000..6ff236abd
--- /dev/null
+++ b/lib/ephy-favicon-helpers.c
@@ -0,0 +1,49 @@
+/*
+ *  Copyright © 2012 Igalia S.L.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2, or (at your option)
+ *  any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA.
+ *
+ */
+
+#include "config.h"
+#include "ephy-favicon-helpers.h"
+
+#include <gdk/gdk.h>
+#include <glib.h>
+
+GdkPixbuf *
+ephy_pixbuf_get_from_surface_scaled (cairo_surface_t *surface, int width, int height)
+{
+  GdkPixbuf *pixbuf;
+  int favicon_width;
+  int favicon_height;
+
+  /* Treat NULL surface cleanly. */
+  if (!surface)
+    return NULL;
+
+  favicon_width = cairo_image_surface_get_width (surface);
+  favicon_height = cairo_image_surface_get_height (surface);
+  pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0, favicon_width, favicon_height);
+
+  /* A size of (0, 0) means the original size of the favicon. */
+  if (width && height && (favicon_width != width || favicon_height != height)) {
+    GdkPixbuf *scaled_pixbuf = gdk_pixbuf_scale_simple (pixbuf, width, height, GDK_INTERP_BILINEAR);
+    g_object_unref (pixbuf);
+    pixbuf = scaled_pixbuf;
+  }
+
+  return pixbuf;
+}